3 years ago

Last year there were 48 science projects submitted by students at a science fair. This year there are 52 science projects.

Mathematics

1 answer:

Lapatulllka [165]3 years ago

4 0

Answer:

52 - 48 = 4

Around 7%

(Please tell me if this is wrong)

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Find the a26 arithmetic sequence: -15,-35,-55,-75 -515 460 -490

Vlad [161]

Step-by-step explanation:

<h3>QUESTION:-</h3>

Find 26th term of the A.P --15,-35,-55,-75...

<h3>Solution:-</h3>

First term=a=-15

Common Difference=d=-20

We know that

$\boxed{\sf a_n=a+(n-1)d}$

$\\ \:\:\:\:\sf {:}\dashrightarrow a_{26}=-15+(26-1)(-20)$

$\\ \:\:\:\:\sf {:}\dashrightarrow a_{26}=-15+25(-20)$

$\\ \:\:\:\:\sf {:}\dashrightarrow a_{26}=-15+(-500)$

$\\ \:\:\:\:\sf {:}\dashrightarrow a_{26}=-15-500$

$\\ \:\:\:\:\sf {:}\dashrightarrow {\boxed{\bf a_{26}=-515}}$

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3 years ago

I need help with this now pls!!

zubka84 [21]

Answer:

first box 9.6 2nd box 7.2 third box 12

Step-by-step explanation:

9.6 is the missing height 12 is the hypotenuse is always last

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3 years ago

A car travels at a speed of 0.915 miles per minute. Write the speed in expanded form.

lisabon 2012 [21]

Answer:

Expanded form - (0×1+9×1/10+1×1/100+5×1/1000) miles per minute.

3 0

2 years ago

Solve: 5(3x + 2) -2 = 2 (1 -7x)

True [87]

X = -6/29 is the correct answer

5 0

3 years ago

Read 2 more answers

A pet store sold 36 Siamese cats. If the ratio of Siamese cats to house cats sold was 4:9, what is the combined amount of cats s

Dafna11 [192]

The combined amount of cats sold is 117.

Ratio expresses the relationship between two variables. It shows the frequency of which that one value is contained within another variable.

The ratio of Siamese cats to house cats = 4 : 9

Number of Siamese cats = 36

Number of combined cats = c

This equation can be formed using the above information:

4/13 x c = 36

4c = 468

c = 468 / 4

c = 117

A similar question was answered here: brainly.com/question/411732

5 0

2 years ago